Microwave Communication The antenna separations (in meters) required for optimum operation of a space diversity system can be calculated from:where R = effective earth radius (m) and L = path length (m) S = 2λR/L S = λR/L S = λR/RL S = 3λR/L S = 2λR/L S = λR/L S = λR/RL S = 3λR/L ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication A PPI cathode-ray tube as used on a radar set Is used to check the percentage of modulation Indicates both the range and azimuth of a target Is used for receiver alignment Indicates only the range of a target Is used to check the percentage of modulation Indicates both the range and azimuth of a target Is used for receiver alignment Indicates only the range of a target ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The coarse frequency adjustment of a reflex klystron is accomplished by Adjusting the flexible wall of the resonant cavity The AFC system Varying the repeller voltage An adjustment in the synchronizer Adjusting the flexible wall of the resonant cavity The AFC system Varying the repeller voltage An adjustment in the synchronizer ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The resonant frequency of a cavity resonator depends upon The capacitor which tunes it The mode of operation Its electrical dimensions Its physical dimensions The capacitor which tunes it The mode of operation Its electrical dimensions Its physical dimensions ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Klystron oscillators are most often used in the frequency range of 3000 to 30000 MHz 30 to 30000 MHz 300 to 3000 MHz 10 to 10000 MHz 3000 to 30000 MHz 30 to 30000 MHz 300 to 3000 MHz 10 to 10000 MHz ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication If the duration of the radar transmitted pulse, on a particular range of operation, is increased, the required bandwidth of the receiver’s IF amplifiers Must be increased Must remain as before Must be doubled May be decreased Must be increased Must remain as before Must be doubled May be decreased ANSWER DOWNLOAD EXAMIANS APP
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